WO1999046061A1 - Procede pour activer une monture de tamis avec des ultrasons - Google Patents

Procede pour activer une monture de tamis avec des ultrasons Download PDF

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Publication number
WO1999046061A1
WO1999046061A1 PCT/EP1999/001494 EP9901494W WO9946061A1 WO 1999046061 A1 WO1999046061 A1 WO 1999046061A1 EP 9901494 W EP9901494 W EP 9901494W WO 9946061 A1 WO9946061 A1 WO 9946061A1
Authority
WO
WIPO (PCT)
Prior art keywords
sieve frame
screen
screen frame
sieve
frame
Prior art date
Application number
PCT/EP1999/001494
Other languages
German (de)
English (en)
Other versions
WO1999046061A8 (fr
Inventor
Harald Hielscher
Original Assignee
Dr. Hielscher Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr. Hielscher Gmbh filed Critical Dr. Hielscher Gmbh
Priority to JP2000535466A priority Critical patent/JP2002505954A/ja
Priority to EP99915549A priority patent/EP1062057B1/fr
Priority to DE59901794T priority patent/DE59901794D1/de
Publication of WO1999046061A1 publication Critical patent/WO1999046061A1/fr
Publication of WO1999046061A8 publication Critical patent/WO1999046061A8/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50—Cleaning
    • B07B1/54—Cleaning with beating devices

Definitions

  • the invention relates to a method for exciting a screen frame with ultrasound according to the preamble of claim 1.
  • the known ultrasonic screening devices and screening processes consist essentially of a screen frame with an applied screen surface and an ultrasound source coupled to the screen frame via an ultrasound transducer, the transducer converting the high-frequency electrical vibrations into mechanical bending vibrations.
  • WO 94/27748 describes a device and a method for sieving, classifying, sifting, filtering or sorting substances with a sieve surface provided in a sieve frame and associated ultrasonic transducer, by means of which vibrations can be fed to the sieve surface.
  • the ultrasound transducer is assigned a resonator which is in contact with the sieve surface and which is matched to the resonance of the ultrasound transducer and can be set into bending vibrations by the latter.
  • the longitudinal vibrations generated by the sound transducer are converted into bending vibrations of the same frequency in the resonator bars arranged tangentially to the longitudinal direction of vibration.
  • a disadvantage of all known embodiments is that the large dimensions resulting from the "bending oscillator" principle of oscillation do not allow a sufficiently compact design of the screening device.
  • the object of the invention is to develop a method for exciting screen frames by means of ultrasound, with which a more compact design of screening devices than previously known is ensured.
  • the excitation of a sieve frame with ultrasound as a longitudinal oscillator ensures a flatter and thus more compact construction of sieve frames than sieve devices excited according to the bending oscillator principle.
  • the vibrating system to the element to be excited with the vibrations (for example screen frame) with a lateral offset, a compact design can be achieved in that the vibrating system is arranged under the screen frame.
  • ring shapes also elliptical shapes
  • the screen frame in particular if the excitation axis of the vibrating system is shifted into the plane of the screen frame transmitting the vibrations by means of a coupling element.
  • FIG. Shows a schematic representation of the ring-shaped screen frame with the ultrasound source.
  • a circular screen frame 1 is formed from an integer multiple of ⁇ / 2 elements, one of the ⁇ / 2 elements being formed by a coupling element 2.
  • the coupling element 2 consists of two ⁇ / 2 longitudinal oscillators 3, which are interconnected in their maximum amplitude.
  • An ultrasound generating system 4 (ultrasound transducer) is as a ⁇ / 2 longitudinal oscillator on the lower ⁇ / 2 longitudinal oscillator 3 of the coupling element
  • the high-frequency mechanical longitudinal vibrations generated by the ultrasonic transducer 4 are transmitted via the coupling Transfer element 2 to a sieve frame 1, propagate over the entire circumference according to diagram II of the figure and are evenly transmitted to the sieve fabric (not shown).
  • Diagram I of the figure shows the course of oscillation in transducer 4 and in coupling element 2.
  • Diagram II shows the course of oscillation in sieve frame 1, the amplitude quantity a being plotted over the location of vibration x in both diagrams 1, 11 of the figure. There is a vibration node at location x 0 .
  • a sieve applied to the sieve frame 1 is set into lateral movements which largely correspond to the sieve movements during manual sieving.
  • the excitation of the screening surface is offset by 90 °.

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Abstract

L'invention concerne un procédé permettant d'activer une monture de tamis avec des ultrasons. L'objectif de l'invention est de développer un procédé permettant d'activer un cadre de tamis avec des ultrasons, qui garantisse l'utilisation de dispositifs de tamisage d'une construction plus compacte que celles connues jusqu'ici. Cet objectif est atteint par le fait que la monture de tamis est activée en tant qu'oscillateur longitudinal. La monture de tamis (1) est activée en particulier par l'intermédiaire d'un élément d'activation (2) qui décale l'axe d'activation (5) du système osWillant (4) dans le plan (6) de la monture de tamis (1) transmettant les oscillations.
PCT/EP1999/001494 1998-03-11 1999-03-09 Procede pour activer une monture de tamis avec des ultrasons WO1999046061A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2000535466A JP2002505954A (ja) 1998-03-11 1999-03-09 超音波で篩枠を励振する方法
EP99915549A EP1062057B1 (fr) 1998-03-11 1999-03-09 Procede pour activer une monture de tamis avec des ultrasons
DE59901794T DE59901794D1 (de) 1998-03-11 1999-03-09 Verfahren zum anregen eines siebrahmens mit ultraschall

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19811266A DE19811266C1 (de) 1998-03-11 1998-03-11 Verfahren zum Anregen eines Siebrahmens mit Ultraschall
DE19811266.1 1998-03-11

Publications (2)

Publication Number Publication Date
WO1999046061A1 true WO1999046061A1 (fr) 1999-09-16
WO1999046061A8 WO1999046061A8 (fr) 1999-10-21

Family

ID=7861004

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/001494 WO1999046061A1 (fr) 1998-03-11 1999-03-09 Procede pour activer une monture de tamis avec des ultrasons

Country Status (6)

Country Link
EP (1) EP1062057B1 (fr)
JP (1) JP2002505954A (fr)
KR (1) KR100462351B1 (fr)
CN (1) CN1138601C (fr)
DE (2) DE19811266C1 (fr)
WO (1) WO1999046061A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9822880D0 (en) * 1998-10-21 1998-12-16 Russel Finex Improved efficiency ultrasonic sieving apparatus
JP2002011409A (ja) * 2000-06-30 2002-01-15 Honda Electronic Co Ltd 超音波フルイ装置
US7017754B2 (en) 2002-11-21 2006-03-28 Hitachi Metals, Ltd. Method and apparatus for classifying fine balls and method for producing cylindrical sieve
CN100414830C (zh) * 2003-08-26 2008-08-27 财团法人工业技术研究院 可调负重的表面声波致动装置
JP4402966B2 (ja) * 2004-01-22 2010-01-20 新日本製鐵株式会社 超音波角形篩装置
JP4521599B2 (ja) * 2004-11-08 2010-08-11 本多電子株式会社 ふるい装置
JP4729385B2 (ja) * 2005-11-08 2011-07-20 株式会社村上精機工作所 振動ふるい装置
EP2067534A1 (fr) * 2007-12-05 2009-06-10 Artech Systems AG Système de criblage doté d'un crible tubulaire et procédé de fonctionnement d'un système de criblage doté d'un crible tubulaire
EP3268137B1 (fr) 2015-03-10 2023-11-01 Telsonic Holding AG Système de tamisage, tamiseur tourbillonnaire et utilisation d'un système de tamisage ou d'un tamiseur tourbillonnaire
WO2016141971A1 (fr) * 2015-03-10 2016-09-15 Telsonic Holding Ag Système de tamisage, tamiseur tourbillonnaire et utilisation d'un système de tamisage ou d'un tamiseur tourbillonnaire

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062768A (en) * 1972-11-14 1977-12-13 Locker Industries Limited Sieving of materials
FR2682050A1 (fr) * 1991-10-08 1993-04-09 Chauvin Sarl Ets Dispositif de tamisage equipe de moyens de decolmatage.
WO1994027748A1 (fr) 1993-05-26 1994-12-08 Telsonic Ag Procede et dispositif de criblage, de triage, de separation, de filtrage ou de tamisage de substances

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4418175C5 (de) * 1993-05-26 2006-02-16 Telsonic Ag Vorrichtung und Verfahren zum Sieben, Klassieren, Sichten, Filtern oder Sortieren von Stoffen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062768A (en) * 1972-11-14 1977-12-13 Locker Industries Limited Sieving of materials
FR2682050A1 (fr) * 1991-10-08 1993-04-09 Chauvin Sarl Ets Dispositif de tamisage equipe de moyens de decolmatage.
WO1994027748A1 (fr) 1993-05-26 1994-12-08 Telsonic Ag Procede et dispositif de criblage, de triage, de separation, de filtrage ou de tamisage de substances

Also Published As

Publication number Publication date
CN1138601C (zh) 2004-02-18
DE19811266C1 (de) 1999-08-05
CN1292735A (zh) 2001-04-25
EP1062057B1 (fr) 2002-06-19
KR100462351B1 (ko) 2004-12-17
WO1999046061A8 (fr) 1999-10-21
EP1062057A1 (fr) 2000-12-27
KR20010034570A (ko) 2001-04-25
JP2002505954A (ja) 2002-02-26
DE59901794D1 (de) 2002-07-25

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